baber/WOPTO huggingface dataset:
Patent CA-2116749-C (CA)
Title: Process for the direct reduction of iron oxide-containing materials withsolid carbonaceous reducing agents
Inventor: BRESSER WOLFGANG
IPC: C21B13/00
Filed: 1994-03-01
Granted: 2006-05-02
Abstract: In a. first fluidized bed vessel containing an expanded fluidized beck iron oxide-containing materials are reduced under weakly reducing conditions with solid carbonaceous reducing agents to or to less than the feO state. In a second fluidized bed vessel containing an expanding fluidized bed the gas-solids suspension discharged from the first fluidized bed vessel is treated with a highly reducing fluidizing gas whereby the material is reduced in part to iron metal. From the gas-solids/suspension discharged from the second fluidized bed vessel the carbonized carbonaceous material is separated and is recycled to the first fluidized bed vessel. The exhaust gas from which the carbonized carbonaceous material has been removed is purified and CO2 is removed therefrom and the exhaust gas is subsequently fed as a fluidizing gas to the second fluidized bed vessel. A reduced material which has a degree of metallization from 50 to 80 % and the remainder of the carbonized carbonaceous material are discharged from the second fluidized bed vessel and in a melting reactor are completely reduced and melted. The has evolved from the molten material is afterburnt directly above the molten material by a blowing of oxygen-containing gases onto the surface of the molten material and the heat which is thus generated is substantially transferred to the molten material. A succeeding second of afterburning results in a complete afterburning of the gas. The material discharged from the lower portion of the second fluidized bed vessel may be reduced further in a third fluidized bed vessel up to a degree of metal-lization of 95%.
Patent CA-2122903-C (CA)
Title: Process for producing polyolefin
Inventor: JEJELOWO MOSES O
IPC: C08F10/00
Filed: 1992-10-26
Granted: 1999-06-15
Abstract: A process for producing polyolefins having a controllable broadened molecular weight distribution utilizing transition metal metallocene catalyst systems, wherein the metallocene has at least one cyclopentadienyl ring which is substituted by a substituent having a 2° or 3° carbon atom through which it is covalently bonded to the cyclopentadienyl ring.
Patent CA-2131019-C (CA)
Title: Nitrosation process
Inventor: HUGHES MARK J
IPC: A61P25/28
Filed: 1993-02-11
Granted: 2002-12-24
Abstract: A process for preparing compounds of formula (I), by nitrosating compounds (II), compounds of formula (I) having pharmaceutical activity. (see formula I) wherein R1 represents (see formula III) in which r represents an integer of 2 to 4, s represents 1 or 2 and t represents 0 or 1; R2 is a group OR4, where R4 is C1-4 alkyl, C2-4 alkenyl or C2-4 alkynyl or a group OCOR5 where R5 is hydrogen or R4; and R3 is CN ; (see formula II) wherein R1' is R1 or a group convertible thereto, and R3' is an electron withdrawing group.
Patent CA-2132318-C (CA)
Inventor: TAMMINEN ESA
IPC: B01D3/00
Filed: 1993-03-18
Granted: 2001-08-07
Abstract: The invention relates to a process for preparing tertiary methyl ethers.  According to the process the feedstock containing hydrocarbons is fed to a catalytic distillation reactor system, in which the isoolefines, in particular the C4 to C7 isoolefines, of the feed are reacted with methanol in the presence of a cation exchange resin in order to produce tertiary methyl ether products. The reaction product containing the ethers is removed from the distillation system as the bottoms product and, if necessary, it is subjected to an additional treatment for producing a gasoline component.  The unreacted methanol is removed as the overhead product of the distillation. According to the invention, the distillate withdrawn mainly contains an azeotrope of C4 hydrocarbons and methanol, the C4 amount of which at least approximately corresponds to the C4 hydrocarbon concentra-tion of the hydrocarbon feed, a substantial amount of the unreacted methanol being removed in the form of said azeotrope. By means of the invention the need for a separate methanol washing unit is eliminated in the apparatus which considerably diminishes apparatus investment costs.
Patent CA-2132866-C (CA)
Title: Thermoforming and heat shrinking for forming containers
Inventor: FORTIN JOHN K
IPC: B29D22/00
Filed: 1993-03-24
Granted: 2005-10-18
Abstract: Apparatus and methods for the formation of biaxially oriented thermoplastic articles having flat surfaces or sharp contours, and the articles so produced. Such apparatus and method relate to the heat-shrinking of biaxially oriented intermediates (50) onto male forms (82) to produce articles (70) of exacting dimensions and flat surfaces or sharply defined contours. Such thermoplastic articles include autoclavable, heat fillable, heat stable, transparent PET containers (70).
Patent CA-2141534-C (CA)
Title: Artifact-free imaging contrast agent
Inventor: BRIGGS RICHARD W
IPC: A61B5/055
Filed: 1993-07-26
Granted: 1999-03-16
Abstract: A contrast agent useful for imaging a sample comprising a suspension in a medium acceptable for imaging (a) particles of a contrast agent possessing paramagnetic characteristics and (b) particles of a contrast agent possessing diamagnetic characteristics. Also disclosed is a method of imaging a sample which comprises introducing into the sample the above-described contrast agent and generating a substantially artifact-free image thereof. The combination of diamagnetic barium sulfate and superparamagnetic iron oxide (SPIO) in one suspension produces a macroscopic cancellation of positive and negative magnetic susceptibility components which eliminates susceptibility artifacts even with gradient echo pulse sequences. The relaxation properties which make the SPIO suspension a useful negative contrast agent are retained.
Patent CA-2142930-C (CA)
Title: Triple layer papermaking fabric providing improved fiber support
Inventor: HAWES JOHN M
IPC: D21F1/00
Filed: 1995-02-20
Granted: 2000-09-12
Abstract: A triple-layer papermaking fabric  includes top and a bottom weft yarn layers interwoven with a system of warp yarns.  The warp yarn system includes pairs of associated, stacked first and second warp yarns.  The first warp yarn in each pair interweaves with the top weft  yarns  in  a  plain-weave  pattern  occasionally broken by an interweaving with a bottom weft yarn to join the top and bottom weft yarn layers together. The second warp yarn in each pair, ordinarily running between  the  top  and  bottom  weft  yarn  layers  and stacked below the first warp yarn, weaves over the top weft yarn  skipped by the first warp yarn when  it weaves down under a bottom weft yarn to maintain the plain-weave  character  of  the  top  surface  of  the fabric.   The second warp yarn never weaves with the bottom weft yarns.   The  fabric  is  flat-woven,  and subsequently seamed into endless form.  The first warp yarns have an exaggerated crimp to provide the fabric with  an  enhanced  seam  strength.    The  second warp yarns,  having relatively  little crimp,  provide  the fabric with an enhanced stretch resistance.
Patent CA-2143862-C (CA)
Inventor: LANCASTER GARY D
IPC: B65D85/18
Filed: 1993-09-03
Granted: 1998-11-17
Abstract: A container comprises opposed front and rear walls (13, 14) foldably connected t o a pair of opposed side walls (16, 18), beveled shoulder walls (118, 120), and a hanger support panel (76). Each shoulde r wall is disposed at an obtuse angle with respect to its adjacent side wall. The distance between the upper edges of the shoulder walls is less than the distance between the lower edges of the shoulder walls. The hanger support panel is foldably joined to the top edge of the rear wall and is disposed at a generally right angle with respect to the front and rear walls. The support pane l extends between the upper edges of the shoulder walls and is supported by contact between its inner surface and the upper edges of the shoulder walls. The support panel has a slot (94) so that a hanger-supported article can hang from the support panel.
Patent CA-2144494-C (CA)
Title: Valve assemblage and method of use
Inventor: HARRIS CLARK E
IPC: F16K3/00
Filed: 1995-03-13
Granted: 2000-02-15
Abstract: A valve assemblage (10, 50) for controlling the flow between first and second containerized systems (C1, C2) having first and second openings (A, B), respectively. The assemblage comprises a first valve assembly (12, 52) positioned at the first opening of the first containerized system and a second valve assembly (14, 54) positioned at the second opening of the second containerized system. A piston (20, 84) in the first valve assembly, when in a first position opens an entrance port (18, 100) for receiving fluid from the first containerized system; and correspondingly, a retractable sleeve (36, 136) in the second valve assembly (14, 54) opens an entrance port (30, 122) in a proboscis member (26, 110) having a channel (28, 118) and outlet (32, 142, 144) to the second containerized system.
Patent CA-2145812-C (CA)
Title: Digital video networks
Inventor: BONJA MARIO
IPC: H04N7/14
Filed: 1995-03-29
Granted: 1998-11-17
Abstract: A digital video network comprises a controller and network sites each coupled tothe controller via communication paths. The network sites and controller include codecs for converting between encoded signals on the communications paths and video and audio signals in the network sites and in the controller. The controller also includes at least one unit for producing a quad split video signal from four video signals supplied thereto. The coders encode four audio signal channels and audio mixing control signals in each encoded signal. The decoder in each network site decodes the audio signal channels from the encoded signal which it receives, and is responsive to the control signal in the encoded signal to mix the decoded audio signal channels in a predetermined manner to provide a continuous audio presence at the network site, independently of whether or not the video signal in the encoded signal comprises the quad split video signal.
Patent CA-2148188-C (CA)
Title: Controller unit for electronic devices
Inventor: GOTO TEIYU
IPC: A63F13/245
Filed: 1995-04-28
Granted: 2005-06-14
Abstract: A controller unit for controlling an electronic device such as a video game. The controller unit comprises a housing with a pair of handles diverging toward a user and gripped by the palms of the user, first and second control sections arranged on the top of the housing and each including a plurality of key elements, and third and fourth control sections arranged on the front side of the housing and each including upper and lower key elements. The first control section comprises a key body having a first semispherical recess on its bottom and a second semispherical recess on its top, a spherical fulcrum member located below the key body and engageable with the first recess, a base plate mounted in the housing and including fixed contacts, a resilient body disposed between the key body and the base plate and including movable contacts, and a key support centrally located at the key body and having a semispherical projection engageable with the second recess.
Patent CA-2149148-C (CA)
Inventor: EVANS SAMUEL
IPC: C10N30/10
Filed: 1993-12-10
Granted: 2004-02-17
Abstract: Compounds of formula (I), wherein R1 is C1-C18 alkyl, C5-C12 cycloalkyl, phenyl, benzyl, .alpha.-methylbenzyl or .alpha.,.alpha.-dimethylbenzyl, R2 is hydrogen or has one of the meanings given for R1, R3 is C4-C50 alkyl, m is 1, 2 or 3, and n is a number from 1 to 15, are suitable for stabilising organic material against thermal, oxidative and/or actinic degradation.
Patent CA-2149798-C (CA)
Title: Variable venturi for pneumatic conveying systems
Inventor: VANOIRSCHOT FRANK
IPC: B65G53/50
Filed: 1995-05-19
Granted: 2001-02-27
Abstract: A venturi device is used in a pneumatic conveying system.  The device comprises a housing having a material feed inlet through the housing, and open downstream end through which the material is carried away from the housing, an open upstream end fitted with a frustoconical nozzle through which primary air is fed to produce a vacuum in the device and an air inlet through which secondary air is drawn by the vacuum.  The air inlet is adjustable in size to accommodate different air to material mixture ratios within the device.
Patent CA-2150586-C (CA)
Title: Mulching mower mechanism
Inventor: MCCUNN MYRON LEE
IPC: A01D34/00
Filed: 1995-05-31
Granted: 1998-11-24
Abstract: A mulching mower mechanism, having an inverted U-shaped channel member positioned within the outer periphery of a cutting chamber of a mower deck for generally confining the clippings circulating at the outer periphery of the cutting chamber.  The channel member extends generally across the mower deck's discharge outlet for generally diverting the stream of clippings away from the outlet and thereby serves to maintain the clippings within the deck to be re-cut by the blade.  The channel member includes an upper and outer wall portions positioned adjacent the discharge outlet for generally blocking the clippings and air within the channel from exiting the discharge outlet.  The channel member also includes an inner wall portion which separates the stream of clippings from the relatively clean air circulating within the inner portion of the deck.  The discharge outlet is in fluid communication with the inner portion of the cutting chamber for allowing the clean air to exit the cutting chamber via the discharge outlet, thereby maintaining an updraft within the cutting chamber.
Patent CA-2151074-C (CA)
Title: Method for producing 1,2-benzisothiazol-3-ones
Inventor: KAGANO HIROKAZU
IPC: C07D275/06
Filed: 1995-06-06
Granted: 2005-08-02
Abstract: A method for producing a 1,2-benzisothiazol-3-one, having the steps of carrying out a reaction of a 2-(alkylthio)benzaldehyde with a hydroxylamine to give a 2-(alkylthio)benzaldehyde oxime and carrying out a reaction of the 2-(alkylthio)benzaldehyde oxime with a halogenating agent; and a method for producing a 1,2-benzisothiazol-3-one, having the steps of carrying out a reaction of a 2-halobenzonitrile with an alkanethiol in a heterogeneous solvent system in the presence of a base to give a 2-(alkylthio)benzonitrile and carrying out a reaction of the 2-(alkylthio)benzonitrile with an halogenating agent in the presence of water.
Patent CA-2151509-C (CA)
Inventor: BULL CHRISTOPHER
IPC: G01N15/08
Filed: 1993-12-07
Granted: 2003-01-21
Abstract: A method of detecting the permeability of an article to oxygen is disclosed. A  fluorescent redox indicator, preferably riboflavin, is dispersed in a carrier and placed on an impermeable substrate. The article to be measured is placed adjacent to the carrier. Residual oxygen is removed, the redox indicator is photoreduced, the article and carrier are exposed to oxygen, and the indicator is exposed to UV light.
Patent CA-2154094-C (CA)
Title: Deodorant cosmetic composition superior in resistance to discoloration and dispersion
Inventor: KURIHARA YASUO
IPC: C08L83/12
Filed: 1995-07-18
Granted: 1999-08-24
Abstract: The cosmetic composition is disclosed by blending at least an antibacterial zeolite, having all or part of its ion exchangeable ions substituted by ammonium ions and antibacterial metal ions, and silicone.
Patent CA-2155501-C (CA)
Inventor: MOREIRA ALBERTO
IPC: G01S7/285
Filed: 1995-08-04
Granted: 1998-10-27
Abstract: In a method for compressing raw digital SAR (synthetic aperture radar) data input data are first coded with fewer bits by means of an adaptive block quantization (BAQ) and subsequently vectors are formed from the block-quantized data. The vectors are coded by a special mapping table in order to achieve an effective data reduction. In a method for decompressing digital data, vectors are generated from the coded data by means of a code book table, from which scalar values are formed. After de-standardization of the scalar values, decoded data are obtained in that the scalar values are multiplied for the destandardization by the standard deviation of each block already calculated during coding.
Patent CA-2157728-C (CA)
Title: Automatic computer upgrading
Inventor: STUPEK RICHARD ALLEN JR
IPC: G06F9/445
Filed: 1995-09-07
Granted: 1999-02-23
Abstract: A method for use in upgrading a resource of a computer from an existing version of the resource to a later version of the resource.  The method includes the steps of (a) digitally storing upgrade information which identifies the later version and describes features of the later version relative to one or more earlier versions of the resource, (b) digitally storing in the computer information identifying the existing version, by computer, automatically determining which of the earlier versions is the existing version, and (c) based on the results of the comparing step, automatically determining, or displaying to a user at least some of the upgrade information to aid the user in determining, whether to perform an upgrade.  The upgrade information may be stored on a portable medium along with copies of the resources and the upgrade information may include instructions, in accordance with a predefined common syntax, for installing each of  the resources.
Patent CA-2159857-C (CA)
Inventor: DEVANATHAN NARASIMHAN
IPC: B01J8/22
Filed: 1995-10-04
Granted: 2000-02-29
Abstract: Apparatus and methods useful for degassing a reaction mixture in a petrochemical processing reactor are disclosed. The methods and apparatus employ a novel liquid-gas separator that includes non-linear risers and that discharges the mixture into a vapor space in a manner intended to maximize degassing of the mixture. Resid hydrotreating processes employing these methods also are disclosed.
Patent CA-2160440-C (CA)
Inventor: LANGE LOUIS G III
IPC: A23L1/30
Filed: 1995-10-12
Granted: 1998-08-25
Abstract: This invention encompasses methods for manufacturing purified, high molecular weight sulfated polysaccharide compositions that inhibit pancreatic cholesterol esterase and lower cholesterol in the blood stream.
Patent CA-2161419-C (CA)
Title: Process for polymerizing monomers in fluidized beds
Inventor: DECHELLIS MARC LOUIS
IPC: C08F4/62
Filed: 1993-04-26
Granted: 1999-05-04
Abstract: The invention relates to methods for determining stable operating zones for gas fluidized bed polymerization and to a process for gas phase polymerization. In particular, a method of determining a stable operating zone of a gas fluidized bed polymerization reactor operating in condensed mode which comprises observing fluidized bulk density changes in the reactor associated with changes in the composition of the fluidizing medium; and increasing the cooling capacity of the recycle stream by changing the composition without exceeding the level at which a reduction in the fluidized bulk density becomes irreversible.
Patent CA-2166053-C (CA)
Title: Absorbent articles
Inventor: BEWICK-SONNTAG CHRISTOPHER PHI
IPC: A61F13/534
Filed: 1994-06-27
Granted: 2000-02-29
Abstract: A diaper or other absorbent article may include an absorbent body comprising in sequence from the top (the surface adjacent the wearer's body). An upper assembly (2, 3, 4, 5) comprising an acquisition layer (3) formed of first fibrous material substantially free of superabsorbent material, a superabsorbent layer (5) consisting substantially only of first superabsorbent material having a Gel Layer Permeability value of at least about 4ml/cm2/sec and which is present in an amount of about 20g/m2 to 320g/m2, a storage assembly (6, 7, 8) that includes second superabsorbent material (7) having an absorption against pressure of at least 15g/g at 50g/cm2 and which comprises an upper storage layer (6) and a lower storage layer (7) containing at least 70 % by weight of the total amount of second superabsorbent in the upper and lower storage layers and which has a thickness which is the same as or less than the thickness of the upper storage layer (6).
Patent CA-2170351-C (CA)
Title: Abrasive jet stream cutting
Inventor: RHOADES LAWRENCE J
IPC: B24C11/00
Filed: 1994-08-29
Granted: 2004-07-13
Abstract: Abrasive jet stream cutting, wherein an abrasive is suspended in a flowable jet medium (64) and projected at high velocity and pressure (75) at a workpiece (76) is substantially improved by forming the medium of a polymer having reformable sacrificial chemical bonds which are preferentially broken under high shear conditions. Projecting the medium and suspended abrasive breaks the reformable sacrificial chemical bonds while cutting. The chemical bonds will reform, permitting recycling of the medium and abrasive for reuse in the method. The jet is effective at pressures of about 14 to 80 MPa.
Patent CA-2178442-C (CA)
Title: Prosthetic implant restoration method
Inventor: INGBER ABRAHAM
IPC: A61C8/00
Filed: 1996-06-06
Granted: 1999-05-11
Abstract: A healing abutment embedded in edentulous bone remains in its implantation site in contouring contact with gingival tissue and has an impression coping mounted directly thereon for data transfer of the healing abutment position and shape to a replica of the implantation site on which a restorative prosthesis is formed. The prosthesis is transferred to the actual implantation site after removal of the healing abutment therefore when the gingival tissue has healed.
Patent CA-2178772-C (CA)
Title: Glove
Inventor: EBERBACH MARK A
IPC: A41D13/08
Filed: 1996-06-11
Granted: 1999-08-17
Abstract: A device adapted to be worn by a user to protect an elongated portion of the user's body. The device comprises a support member positionable on a user's body adjacent to the elongated portion of the user's body to be protected. A pair of anatomically linear load-bearing members are included. The load-bearing members are coupled in laterally spaced relationship with respect to the support to define an elongated space therebetween. The load-bearing members and space therebetween are essentially parallel with each other and parallel with the elongated portion of the user's body to be protected. Further included are retention means to maintain the support member in position on the user's body with the space between the load-bearing members overlying the elongated portion of the user's body to be protected.
Patent CA-2179882-C (CA)
Title: Multimode interpolation filter as for a tv receiver
Inventor: CANFIELD BARTH ALAN
IPC: H04N5/44
Filed: 1994-01-12
Granted: 2004-03-23
Abstract: A multimode scan converter includes a delay element (33) for delaying one horizontal line of video signal and selectively redisplaying that line.  A multiplexer (30) is arranged to selectively provide either luminance signal or chrominance signal to the delay element.  Output signal from the delay element and output signal from the multiplexer are coupled to a proportioning circuit (34) which sums the two signals in complementary proportions (e.g. K and 1-K).  A second multiplexer (35), which provides up-converted output luminance signal, is arranged to selectively pass the luminance signal or signal from the proportioning circuit.  A third multiplexer (36), which provides up-converted output chrominance signal, is arranged to selectively pass the chrominance signal or signal from the proportioning circuit.
Patent CA-2180842-C (CA)
Title: Method and apparatus for controlling lamp intensity
Inventor: BROOKER GARY
IPC: H04B10/118
Filed: 1995-11-01
Granted: 2005-08-09
Abstract: Methods  and  apparatuses  for high-speed control of lamp intensity and for high-speed optical data  communication are dis-closed.  In particular embodiments, an arc, plasma or halogen lamp (2) is provided with the ability to change wavelengths and/or in-tensities at high rates (up to 10 gigahertz) by maintaining materials which  may  be solid or liquid under typical lamp operation or storage conditions in the vapor state.  This method and apparatus is particularly appli-cable to microscopy and high-speed optical data  communication,  particularly at wave-lengths in the visible and ultraviolet spectra.